Scale, Edemia or virus

[SteveM]

Hey all,

I appreciate all the help I received in the past. I am having a problem with all of my Phals about 6 of them. No other genera are having issues. They get these pot hole marks on the underside of the leaves then in a day or 2 develop chlorotic blotches on the top side. When I hold the leaf through the light it is translucent. I am thinking edemia but I want to make sure. I am growing them in a greenhouse in a shady spot which recieves spotting light a few hours a day. I have had to water them about every 3 to 4 days. It has been in the high 90s lately. The plants looked great until I noticed this the past few days. This plant did not show anything this morning when I looked at it and now at 230 well pot holes. I am tossed up between scale, edema or CSV. looking at the pics I think I can see a tiny white dot in the middle so I will check better for scales. but I have wiped down with alcohol I had a mite problem a month ago but that I took care of. I see no more webbing although I know some types don't have webbing, No black or brown or red marks on tissue with alcohol. I appreciate all help.

Thans